Smart watch



FIG. 1 is a front and right-side perspective view of a smart watch showing our new design;

FIG. 2 is a rear and left-side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a right-side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines shown in the drawings represent portions of the smart watch that form no part of the claimed design. 

CLAIM The ornamental design for the smart watch, as shown and described. 